The one the Wiggle outlet has been flogging off?
Yep, but from another seller. Cost £30, brand new, amazing stuff. Very comfy, not too heavy, seem to regulate temperature well and kept my feet dry in the rain today.
They've loosened up a bit, but also turns out I think my cleat might be in ever-so-slightly the wrong place causing my foot to move weirdly, which I think might be causing the rubbing.